Onboard science data processing for NGST: algorithms and architectures

Luca Scandelli; Arnaldo Bonati; Immacolata Bruno; Patricia A. Caraveo; Koos W. Cornelisse; Ulrich Denskat; Massimiliano Pecora

doi:10.1117/12.393962

28 July 2000 Onboard science data processing for NGST: algorithms and architectures

Luca Scandelli, Arnaldo Bonati, Immacolata Bruno, Patricia A. Caraveo, Koos W. Cornelisse, Ulrich Denskat, Massimiliano Pecora

Author Affiliations +

Proceedings Volume 4013, UV, Optical, and IR Space Telescopes and Instruments; (2000) https://doi.org/10.1117/12.393962
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

In the frame of an ESA program, as a potential contribute to NASA-ESA NGST project, this study focuses on the On Board Data Management System, starting from the requirements defined by a European Science Team. The expected amount of data collected in a single day of observation will be about 1600 GBytes, while the downlink capacity is at present in the range of 5 to 40 GBytes/day. Given these figures, on- board data reduction will be mandatory. It should include detector and signal conditioning, non-linearity correction, cosmic rays detection and rejection, source intensity (photon flux) estimation and data compression. The paper emphasizes different data reduction algorithms and compares their performances with respect to cosmic ray detection efficiency and source intensity estimation error.

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Luca Scandelli, Arnaldo Bonati, Immacolata Bruno, Patricia A. Caraveo, Koos W. Cornelisse, Ulrich Denskat, and Massimiliano Pecora "Onboard science data processing for NGST: algorithms and architectures", Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); https://doi.org/10.1117/12.393962

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